changed chunk generation

ref_seg_ger.py

@@ -215,10 +215,10 @@ class RefSeg(datasets.GeneratorBasedBuilder):
             for i, row in df.iterrows():
 
                 #tokenized_input = row['token'].split(' ')
-                print(row['token'])
-                print(type(row['token']))
-                print(self.TOKENIZER.pre_tokenize_str(row['token']))
-                tokenized_input, offsets = zip(*self.TOKENIZER.pre_tokenize_str(row['token']))
+                tkn = self.TOKENIZER.pre_tokenize_str(row['token'])
+                if not tkn:
+                    continue
+                tokenized_input, offsets = zip(*tkn)
                 tokenized_input = list(tokenized_input)
                 if len(tokenized_input) > 1:
                     if row['tag'] == 'B':